#8 spark plug

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

avalonandl

Full Access Member
Joined
Apr 6, 2019
Posts
2,200
Reaction score
2,635
Location
Troy, MICH & Naples, FL
8.1 in an Avalanche. That plug was such a BEEATCH I ran it on 7 new plugs for a week, LOL.

I changd plugs at 75k miles on my Av ad it REALLY did smooth out the idle.
 

Rocket Man

Mark
Supporting Member
Joined
Dec 25, 2014
Posts
26,006
Reaction score
50,869
Location
Oregon
If you take a normal 5/8” spark plug socket, you’ll see the end can accommodate a regular socket. This combination is the exact right length.
 

Forum statistics

Threads
132,780
Posts
1,874,218
Members
97,624
Latest member
piranha4201
Top